Allow the caller to find out the device that was bound in response to this
call.
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v5: None
Changes in v4: None
Changes in v3:
- Add new change to enhance lists_bind_fdt()
Changes in v2: None
drivers/core/lists.c | 10 +++++++---
drivers/core/root.c | 2 +-
include/dm/lists.h | 6 +++++-
3 files changed, 13 insertions(+), 5 deletions(-)
diff --git a/drivers/core/lists.c b/drivers/core/lists.c
index 0f08bfd..699f94b 100644
--- a/drivers/core/lists.c
+++ b/drivers/core/lists.c
@@ -118,7 +118,8 @@ static int driver_check_compatible(const void *blob, int
offset,
return -ENOENT;
}
-int lists_bind_fdt(struct udevice *parent, const void *blob, int offset)
+int lists_bind_fdt(struct udevice *parent, const void *blob, int offset,
+ struct udevice **devp)
{
struct driver *driver = ll_entry_start(struct driver, driver);
const int n_ents = ll_entry_count(struct driver, driver);
@@ -130,6 +131,8 @@ int lists_bind_fdt(struct udevice *parent, const void
*blob, int offset)
int ret = 0;
dm_dbg("bind node %s\n", fdt_get_name(blob, offset, NULL));
+ if (devp)
+ *devp = NULL;
for (entry = driver; entry != driver + n_ents; entry++) {
ret = driver_check_compatible(blob, offset, entry->of_match);
name = fdt_get_name(blob, offset, NULL);
@@ -149,10 +152,11 @@ int lists_bind_fdt(struct udevice *parent, const void
*blob, int offset)
ret = device_bind(parent, entry, name, NULL, offset, &dev);
if (ret) {
dm_warn("Error binding driver '%s'\n", entry->name);
- if (!result || ret != -ENOENT)
- result = ret;
+ return ret;
} else {
found = true;
+ if (devp)
+ *devp = dev;
}
break;
}
diff --git a/drivers/core/root.c b/drivers/core/root.c
index 393dd98..a328a48 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -91,7 +91,7 @@ int dm_scan_fdt_node(struct udevice *parent, const void
*blob, int offset,
if (pre_reloc_only &&
!fdt_getprop(blob, offset, "u-boot,dm-pre-reloc", NULL))
continue;
- err = lists_bind_fdt(parent, blob, offset);
+ err = lists_bind_fdt(parent, blob, offset, NULL);
if (err && !ret)
ret = err;
}
diff --git a/include/dm/lists.h b/include/dm/lists.h
index 87a3af5..2356895 100644
--- a/include/dm/lists.h
+++ b/include/dm/lists.h
@@ -53,7 +53,11 @@ int lists_bind_drivers(struct udevice *parent, bool
pre_reloc_only);
* @parent: parent driver (root)
* @blob: device tree blob
* @offset: offset of this device tree node
+ * @devp: if non-NULL, returns a pointer to the bound device
+ * @return 0 if device was bound, -EINVAL if the device tree is invalid,
+ * other -ve value on error
*/
-int lists_bind_fdt(struct udevice *parent, const void *blob, int offset);
+int lists_bind_fdt(struct udevice *parent, const void *blob, int offset,
+ struct udevice **devp);
#endif
--
2.1.0.rc2.206.gedb03e5
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